Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844087 | First method for using cannula including a valve structure and associated instrument element | — | 1989-07-04 |
| 4840184 | Second method for using cannula including a valve structure and associated instrument elements | — | 1989-06-20 |
| 4832044 | Cannula including a valve structure and associated instrument elements | — | 1989-05-23 |